Vaporizer heat-controlling means



E. M. GETZOFF VAPORIZER HEAT CONTROLLING MEANS Feb. 12, 1929.

Original Filed June 25, 192'? 31mm m Eduard/71622 29? 351 @WtQMLM /Q passagewas constricted and a greater proper Patented Feb. 12, 1929.

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EDWARD M. GETZOFF, OF ELIZABETH, NEW JERSEY, ASSIGIKOR TO INTERNATIONAL MOTOR COMPANY, NEW YORK, N. Y., A. GDlEt-EE'GRATEUN 0F DELAVJARE.

VAPORIZEE HEAT-OOI ITRDLLZNG JEEAHE.

Application filed June25, 1927, Serial No. 201,401. Renewed May 25, 1 28.

It has been found advantageous in auto mot-ivc practice to provide means to heat the intake manifold of the motor so as to coinplctely vaporize the incoming fuel particles. A common means of accomplishing this consists in providing a chamber in the intake manifold of the engine and connecting the chamber to the exhaust manifold in such manner that portion of the heated. exhaust gases will be shunted from the main exhaust and through the chamber iving up some of their heat to the incomin mixture. While this practice yields satisfactory results at or dinary engine speeds it hasbeen found that the volume of exhaust gases passing through the chamber is not sufficient to make available sufficient heat to maintain the walls of the intake manifold at the temperature necessary to completely volatilize the incoming fuel particles when the engine is at idling speeds.

Heretofore edy this defect by providing means whereby a greater proportion of the exhaust gases would be passed through the vaporizing chamber as the engine speed decreased. Such means have usually comprised a valve in the main exhaust passagewhich was controlled by a governor on the engine or by the engine throttle lever in such a manner that as the engine speed was decreased the main exhaust tion of the available exhaust thereby constrained to pass through the vaporizing chamber. These means, however, have not been found entirely satisfactory because of unnecessary complications of parts and for other reasons.

It is the principal object of this invention to control the volume of available exhaust gases passing through the vaporizing chain'- berin such a manner as to overcome the de fects inherent'in known constructions. The relative position of the hand brake lever of the vehicle is ordinarily such with respect to the main exhaust pipe that the said lever may readily and conveniently be connected with the controlling means in the main exhaust pipe. Accordingly, it is proposedto connect one end of the hand brake lever to a butterfly valve or other controlling means in the eX- haust pipe in such manner that when the lever is set the valve will be substantially closed and the major portion of the available exhaust gases will be constrained to pass it has been proposed to T6111;

through the vaporizing chamber, since the hand brake lever will usually be set when the vehicle is at a standstill and the engine idle. Upon releasing the brake and starting the vehicle the valve will heopencd and the major portion of the exhaust gases, which increase in volume'with the engine speed,,allowed to, pass out through the main exhaust pipe, a smaller percentage of the total volume of exhaustgases being required to maintain the necessary temperature in the vaporizing chamber. a

F or a fuller understanding of the invention reference may be had to the following detailed description thereof which should be read in connection with thcaccompanying drawings. In the drawings:

Figure 1 is a viewin side elevation of so much of a motor vehicle as is necessary to show the invention applied thereto; and

Figure 2 is a view of the exhaust and intake manifold of a motor vehicle showing the manner of controlling the flowof exhaust gases through the vaporizing chamberby means of a hand brake lever.

In the drawings, there is shown the exhaust manifolda'of an internal combustion engine and the intake manifold b. The intake manifold b is formed as at b with an enlarged por ion through whiclrpasses the pipe 6 The pipe 6 is adapted to be connected to the exhaust manifold a as by means of the elbow a. The exhaust manifold a discharges into the exhaust pipe 66*, the short pipe section a being interposed between the manifold a and the pipe a i/Vithin the section a is disposed a butterfly valve a which is adapted to be opened and closed by means of the link The link If is connected to. the rod 0 which. is made up of two members 0, o? for a purpose which will appear more clearly hereinafter. The rod 0 is connected as at c to the hand brake lever (Z which is adapted to be swung about its pivot point cl. i

The hand brake lever (Z is illustrated in the drawings in a set or on position. The connection between the hand brake lever and the butterfly valve a by means of the rod 0 is such that when the brake lever is in a set position, as shown, the valve will substantially close the passage through the pipe section a When the brake is released by swinging the lever (Z in the direction of the arrow, the valve (1* will be open, leaving the passage through the section a? practically unobstructed. r r

When the vehicle is in operation the hand brake will, of course, be released, lea-vingthe I 1* Within the manifold a is sufficient to cause a portion of them to pass through the elbow 1 a" and the pipe Z) Within the [vaporizing chamber 22 suflicient tosupply thenecessary amount of lieatto'the fuel stream passing through the enlarged portion of the intake manifold. I But at idling speedsthe pressure of the exhaust gases Within the manifold a is not sufficient to cause a great enough por- 7 tion ofthem'to pass through the pipe 6 withl 'manifolch'an exhaust inanifold,and a vaporin the vaporizing chamber 'if'the main exhaust line is open. At such times, however, the hand brake 'vvill generallybe set.- The passage through the main exhaust line will therefore be obstructed sincejthe valve a is 7 closed and the major portion of the exhaust gases Willbe constrained to pass through the pipe 6 Within the vaporizing chamber and out through the"auxiliary-exhaust 1 "In ordei'ito prevent dainageto the valve a? r on account of the, uncertain position -Whi'chthelever (Z mayassume when the brake is set the rod 0, as prev 'ously stated, is formed of two-'rnembersc", c 'anda spring 0 is interposed thei'ebetween so that should the valve a be completelyclosed'beiore the leverd has reached the end of its travelfthespring 0*, may

be conipressed, thus preventing undue strains It-"Will now be seen that there hasbeen provided means to control the flow of exhaust gases through the vaporizing chamber in the intake manifold ofa motor vehiclesuch that a-gi'eater proportion of the ava lable gases been made oi": the hand brake lever which, it

i j is Well knowinwillusually be set When the engine vehicle is idlingaafor instance, When the Vehicle/1S at rest. f Thus, the efficiency of the engine is greatly increased resulting in decreased Wear on-nioving, parts of the engine," such as the cyl nder 'Walls,'etc. -The cations of parts,

means employed are simp'le,= durable and inexpensive, enta l ng no unnecessary compli- -Nothing which has been said in-the fore going description is intended as a-liniitation upon the scope of the invention" ezicept as may be indicated in the appended claims.

What I claim s j V p 1. In a motor vehicle haming an intake I manifold, an exhaust manifold, a; vaporizing chamber inthe intake manifold, and connections between the exhaust manifold and the vaporizing chamber for heatin'g'the latter,-1neans in the exhaust manifold to cause a greater interchange of heat-between the exhaust manifold and the chamber. upon setting the brake lever of the vehicle than at running speeds of the vehicle.-

2. In a motor vehicle hav ng an intake izing chamber comprisin an enlarged portion in theintake"inani fojdjandapipe connected with the eXhaustai anifold passing therethrough, means in the exhaust .inanifold to cause a greater pi'oportion of exhaust gases to p'assthrough the vaporizingchamberup on setting the hand brake fleverof the vehicle than at running speeds of the vehicle "comprising, a butterfly valve iuthe-exharist line,

means" connecting the valve with the hand brake lever to close the valve Whenjth'e hand brake'l'everii'ssetr f 3.111 a. motor vej icle havin'g intake manifold, an exhaust manifold-,- and 1 a vaportion in the intake manifold and .a pip'el connected with theen haust manifold passing the 'ethrough, means in the'iexha-us't manifold to causea greater proportion (if-exhaust gases to pass through the vaporizing chamber upon setting the hand brakelevei of the vehicle than at running" speeds of the' vehicle coin prising, a butterfly valve in theexhaus't line,

a rod connecting the valve with the hand brake levertoclose the valve When the hand brake lever is set, and ineans on the -rod to permit further =1novement=ofthe lever after the valve hasbeen seated Withoutdamaging June, A. D'.1927.' p

. izingchamber cco nprising an enlargedpor 

